Labrum
Read Your Scan Editorial Team·Last updated
Written from published radiology references and reviewed for plain language. Not written or signed by a physician, and not a diagnosis. How we write these pages →
In plain language
A rim of cartilage around the shoulder socket that helps hold the joint stable.
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Where you'll see this
This wording turns up on Shoulder MRI reports — MRI imaging of the shoulder. A shoulder MRI shows the rotator cuff muscles and tendons, the labrum (the cartilage rim of the socket), the biceps tendon, the joint surfaces, and the surrounding bones. Doctors order it for shoulder pain, weakness, limited movement, or after an injury. Some changes, like mild tendon wear, are common with age and may not fully explain symptoms — your doctor connects the images to your exam.
Questions worth asking your doctor
- Do the MRI findings explain the pain or weakness I feel?
- Is any finding likely age-related rather than from a recent injury?
- What are my options, including physical therapy and other non-surgical care?
- If there is a tear, does it need surgery or can it be managed conservatively?
- Do I need any follow-up, and when?
How common is this?
The labrum is named on shoulder and hip MRI reports. It is a rim of cartilage around the edge of the socket that deepens it and helps hold the joint together — in the shoulder it turns a very shallow socket into a slightly less shallow one, which is a large part of why the shoulder is both so mobile and so prone to instability.
When should I worry?
Labral tears are a common finding and, like meniscal tears, are frequently present without symptoms — particularly in older adults and in overhead athletes, where they can be an adaptation to years of load rather than an injury. Whether one matters depends on the pattern, on whether the joint is unstable, and on whether the symptoms fit. Reports use specific terms for particular patterns, such as SLAP for a tear at the top of the shoulder labrum, and the pattern is more informative than the presence of a tear.
What happens next
A great many labral tears are managed without surgery, with rehabilitation aimed at the muscles that stabilise the joint. Surgery is considered mainly where the joint is genuinely unstable — recurrent dislocation being the clearest indication — or where mechanical symptoms persist despite good rehabilitation. Because labral tears show up so readily on MRI and so often mean nothing, the decision rests heavily on examination.
Frequently asked questions
- Does a labral tear need surgery?
- Frequently not. Many are found incidentally and cause no symptoms, and rehabilitation is effective for many that do. Surgery is considered mainly for genuine instability such as recurrent dislocation, or persistent mechanical symptoms after proper rehabilitation.
- What is a SLAP tear?
- A tear at the top of the shoulder labrum where the biceps tendon attaches. It is a specific pattern that gets named because its location has particular implications, especially in overhead athletes.
- What does the labrum do?
- It deepens the socket and helps hold the joint together. In the shoulder that matters a great deal, because the socket is very shallow and the joint relies on soft tissue for stability far more than the hip or knee do.
Other words on the same report
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